Recently painted an H&S precision stock and was letting the clear dry in the sun. Currently in grad school so I rent an apartment and had it on the deck in the sun. Live on the 3rd floor of the complex. Stock fell 2 stories onto some rocks. Now not only does everyone know I have a rifle here, I busted the butt pad/bottom corner of the stock. How bad will this be to repair? Would JB weld marine be ok to use or do something else?